:root{
  --bg: #ffffff;
  --text: #111827;
  --muted: #6b7280;

  --red: #ef4444;
  --red2:#ff4d6d;

  --safeTop: env(safe-area-inset-top, 0px);
  --safeBot: env(safe-area-inset-bottom, 0px);

  --max: 640px;
}

*{ box-sizing:border-box; -webkit-tap-highlight-color: transparent; }
html,body{ height:100%; }

body{
  margin:0;
  font-family: ui-sans-serif, -apple-system, system-ui, "Segoe UI", Roboto, Helvetica, Arial;
  color: var(--text);
  background: var(--bg);
  overflow-x:hidden;
}

/* =========================
   INTRO: hide content until curtain ends
   ========================= */
body.intro #content{
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
}

body.ready #content{
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
  transition: opacity .15s ease-out, transform .15s ease-out;
}


/* =========================
   LAYOUT
   ========================= */
.wrap{
  min-height: 100svh;
  padding: calc(22px + var(--safeTop)) 16px calc(22px + var(--safeBot));
  display:flex;
  align-items:center;
  justify-content:center;
  position: relative;
  z-index: 2; /* above hearts */
}

.content{
  width: min(var(--max), 100%);
  text-align:center;
}

h1{
  margin: 14px 0 10px;
  font-size: clamp(24px, 6.2vw, 36px);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

p{
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 14px;
}

.tinyNote{
  margin-top: 12px;
  font-size: 12px;
  color: #9ca3af;
}

/* =========================
   HERO GIF
   ========================= */
.heroMedia{
  display:flex;
  justify-content:center;
  align-items:center;
}

.heroGif{
  width: min(240px, 78vw);
  height: auto;
  border-radius: 18px;
  border: 1px solid rgba(17,24,39,.10);
  box-shadow: 0 18px 45px rgba(17,24,39,.12);
  background: rgba(255,255,255,.8);
}

/* =========================
   BUTTONS
   ========================= */
.btnRow{
  display:flex;
  gap:12px;
  justify-content:center;
  flex-wrap: wrap;
  padding-top: 8px;
}

.btn{
  appearance:none;
  border:none;
  border-radius: 14px;
  padding: 14px 16px;
  font-size: 16px;
  font-weight: 800;
  min-width: 120px;

  color: #111827;
  background: #ffffff;
  border: 1px solid rgba(17,24,39,.14);
  box-shadow: 0 12px 26px rgba(17,24,39,.10);

  text-decoration:none;
  display:inline-flex;
  align-items:center;
  justify-content:center;

  transition: transform .12s ease, box-shadow .2s ease, border-color .2s ease;
  touch-action: manipulation;
}

.btn:active{ transform: scale(.98); }

.btn.yes{
  color: white;
  border-color: rgba(239,68,68,.25);
  background: linear-gradient(135deg, var(--red), var(--red2));
  box-shadow: 0 16px 34px rgba(239,68,68,.22);
}

.btn.maybe{
  background: #fff7f7;
  border-color: rgba(239,68,68,.20);
}

/* No button shake (used by JS) */
@keyframes disagree {
  0%,100%{ transform: rotate(0deg); }
  15%{ transform: rotate(-4deg); }
  35%{ transform: rotate(4deg); }
  55%{ transform: rotate(-3deg); }
  75%{ transform: rotate(3deg); }
}
.btn.no.shake{ animation: disagree .35s ease; }

/* NO ZONE: button moves only here */
.noZone{
  position: relative;
  width: min(520px, 100%);
  height: 110px;          /* space for movement */
  margin: 16px auto 0;
}

.noZone .btn.no{
  position: absolute;
  left: 50%;
  top: 72px;              /* default resting position */
  transform: translateX(-50%);
}

/* =========================
   FULLSCREEN MAYBE OVERLAY
   ========================= */
#maybeOverlay{
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);

  display:flex;
  align-items:center;
  justify-content:center;

  opacity: 0;
  pointer-events: none;
  transition: opacity .55s ease;
}

#maybeOverlay.active{
  opacity: 1;
  pointer-events: auto;
}

.overlayContent{
  text-align:center;
  max-width: 90vw;
  animation: softScale .55s ease;
}

.overlayContent img{
  width: min(420px, 86vw);
  border-radius: 18px;
  border: 1px solid rgba(17,24,39,.10);
  box-shadow: 0 24px 60px rgba(17,24,39,.14);
  background: white;
}

.overlayCaption{
  margin-top: 16px;
  font-size: clamp(18px, 5vw, 24px);
  font-weight: 900;
  letter-spacing: -0.02em;
  color: #111827;
}

@keyframes softScale{
  from{ transform: scale(.93); opacity: 0; }
  to{ transform: scale(1); opacity: 1; }
}

/* =========================
   IMAGE HEART BACKGROUND
   ========================= */
.hearts{
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  overflow: hidden;
}

.heartImg{
  position: absolute;
  width: 26px;
  height: auto;
  opacity: 0.28; /* slightly subtle */
  animation: floatHeart linear infinite;
  will-change: transform;
}

@keyframes floatHeart{
  0%   { transform: translateY(0px) rotate(0deg); }
  50%  { transform: translateY(-25px) rotate(8deg); }
  100% { transform: translateY(0px) rotate(0deg); }
}

/* Reduce motion accessibility */
@media (prefers-reduced-motion: reduce){
  .heartImg{ animation: none !important; }
  #curtain{ display:none; }
}

/* =========================
   CURTAIN: 4 QUADRANTS GRID
   ========================= */
#curtain{
  position: fixed;
  inset: 0;
  z-index: 80;
  background: #fff; /* intro should be white */
  overflow: hidden;
  will-change: opacity, transform;
}

/* Grid with 4 images */
.curtainGrid{
  position:absolute;
  inset:0;
  display:grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
}

/* Each quadrant */
.quad{
  position: relative;
  overflow:hidden;
  background: #fff;
}

/* inner image layer */
.quad .img{
  position:absolute;
  inset:0;
  background-size: cover;
  background-position: center;
  transform: scale(1.04);
  opacity: 0;
  transition: opacity .35s ease, transform .6s ease;
}

.quad.show .img{
  opacity: 1;
  transform: scale(1.02);
}

/* Slide-out: left column goes left, right column goes right */
#curtain.opening .q1,
#curtain.opening .q3{
  transform: translateX(-110%);
}
#curtain.opening .q2,
#curtain.opening .q4{
  transform: translateX(110%);
}

.q1,.q2,.q3,.q4{
  transition: transform .9s cubic-bezier(.2,.8,.2,1);
  will-change: transform;
}

#curtain.opening .hint{
  opacity: 0;
  transition: opacity .25s ease;
}

#curtain.done{
  pointer-events:none;
  opacity:0;
  transition: opacity .35s ease;
}

#curtain .hint{
  position: absolute;
  bottom: calc(18px + var(--safeBot));
  left: 50%;
  transform: translateX(-50%);
  font-size: 13px;
  color: rgba(17,24,39,.7);
  background: rgba(255,255,255,.72);
  border: 1px solid rgba(17,24,39,.10);
  padding: 8px 12px;
  border-radius: 999px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

/* Mobile tuning */
@media (max-width: 420px){
  .btn{ min-width: 110px; padding: 13px 14px; }
  .heroGif{ width: min(230px, 86vw); }
}
#curtain{
  background: #fff;              /* intro white */
  transition: background .08s linear, opacity .18s ease;  /* faster */
}

#curtain.opening{
  background: transparent;       /* <-- white overlay gone immediately */
}

#curtain.done{
  opacity: 0;
  pointer-events: none;
}